[PATCH 1/2] drm/ttm: ensure ttm_mem_io_free is called on bo destruction

[Ben Skeggs]

From: Ben Skeggs <bskeggs at redhat.com>

Nouveau will start to use ttm_mem_io_reserve to allocate BAR VM space
for VRAM mappings, and without this call GPU address space gets leaked.

Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index dfa163b..c373cf9 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -472,6 +472,7 @@ static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
 	wake_up_all(&bo->event_queue);
 	spin_unlock(&glob->lru_lock);
 
+	ttm_mem_io_free(bo->bdev, &tmp_mem);
 	ttm_bo_mem_put(bo, &tmp_mem);
 }
 
-- 
1.7.3.1